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authorLukasz Majewski <l.majewski@samsung.com>2010-09-27 14:32:23 +0200
committerSamuel Ortiz <sameo@linux.intel.com>2010-10-29 00:30:06 +0200
commit9d92492fb753f01caa31dc502f69c189c0c22ad0 (patch)
tree1bdc879e0f447bc59228da104b60a299480a21cd
parentmfd: Fix TWL4030 COR bit polarity for BCI SIH block (diff)
downloadlinux-dev-9d92492fb753f01caa31dc502f69c189c0c22ad0.tar.xz
linux-dev-9d92492fb753f01caa31dc502f69c189c0c22ad0.zip
regulator: Separate set_voltage for max8998 ldo and buck
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
-rw-r--r--drivers/regulator/max8998.c43
1 files changed, 40 insertions, 3 deletions
diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c
index 7f5fe6f198cf..1e5bd504fbad 100644
--- a/drivers/regulator/max8998.c
+++ b/drivers/regulator/max8998.c
@@ -297,7 +297,44 @@ static int max8998_get_voltage(struct regulator_dev *rdev)
return max8998_list_voltage(rdev, val);
}
-static int max8998_set_voltage(struct regulator_dev *rdev,
+static int max8998_set_voltage_ldo(struct regulator_dev *rdev,
+ int min_uV, int max_uV)
+{
+ struct max8998_data *max8998 = rdev_get_drvdata(rdev);
+ struct i2c_client *i2c = max8998->iodev->i2c;
+ int min_vol = min_uV / 1000, max_vol = max_uV / 1000;
+ const struct voltage_map_desc *desc;
+ int ldo = max8998_get_ldo(rdev);
+ int reg, shift = 0, mask, ret;
+ int i = 0;
+
+ if (ldo >= ARRAY_SIZE(ldo_voltage_map))
+ return -EINVAL;
+
+ desc = ldo_voltage_map[ldo];
+ if (desc == NULL)
+ return -EINVAL;
+
+ if (max_vol < desc->min || min_vol > desc->max)
+ return -EINVAL;
+
+ while (desc->min + desc->step*i < min_vol &&
+ desc->min + desc->step*i < desc->max)
+ i++;
+
+ if (desc->min + desc->step*i > max_vol)
+ return -EINVAL;
+
+ ret = max8998_get_voltage_register(rdev, &reg, &shift, &mask);
+ if (ret)
+ return ret;
+
+ ret = max8998_update_reg(i2c, reg, i<<shift, mask<<shift);
+
+ return ret;
+}
+
+static int max8998_set_voltage_buck(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct max8998_data *max8998 = rdev_get_drvdata(rdev);
@@ -359,7 +396,7 @@ static struct regulator_ops max8998_ldo_ops = {
.enable = max8998_ldo_enable,
.disable = max8998_ldo_disable,
.get_voltage = max8998_get_voltage,
- .set_voltage = max8998_set_voltage,
+ .set_voltage = max8998_set_voltage_ldo,
.set_suspend_enable = max8998_ldo_enable,
.set_suspend_disable = max8998_ldo_disable,
};
@@ -370,7 +407,7 @@ static struct regulator_ops max8998_buck_ops = {
.enable = max8998_ldo_enable,
.disable = max8998_ldo_disable,
.get_voltage = max8998_get_voltage,
- .set_voltage = max8998_set_voltage,
+ .set_voltage = max8998_set_voltage_buck,
.set_suspend_enable = max8998_ldo_enable,
.set_suspend_disable = max8998_ldo_disable,
};